The present invention is concerned with a device for converting a rotating input motion into a modified output motion. The device has a magnetic coupler including a secondary magnet, a motion output member, and one, or at least a first, primary magnet. The magnetic or polarity profile of the first primary magnet and the magnetic or polarity profile of the secondary magnet are different. The device is configured such that rotating movement of the first primary magnet translates to a combination of rotating and oscillating movement of the motion output member.
